zmVault/electrical-takeoff.md

id, aliases, tags, title

id	aliases	tags	title
electrical		authorship/original destiny/permanent occupational/takeoff/electrical status/draft type/guide	Electrical Takeoff

Electrical Takeoff

Important

Complete pre-takeoff-research, including wiring-method-selection and wiring-device-research, before beginning takeoff.

Tip

Use heating-designations for uncertain scope.

Lighting Control

By PDI convention, lighting-controls-takeoff are generally "Electrical", not "Lighting".

Receptacles

Floor Boxes

Poke-Thru's

Homeruns

Lighting

Takeoff homeruns in Building breakdowns, even serving Amenity spaces.

[!info] Breakdowns

• Area = "... Building"
• System = "Building - BOH ..."

Mechanical Connections

COMMON ASSEMBLIES/MECHANICAL CONNECTIONS .../...

Stair Pressurization Fans

Assume branch circuit conductors must be protected per fire-resistive-wiring-methods-takeoff.

Roof Mounted Equipment

Unit condensing units

Put homeruns on the Area of the dwelling unit. Put connections on the Area of the CU.

.../CONDENSOR HOME RUNS

.../CU CONDENSER SLEEVE W/ FLEX - NO HMRN WIRE

NO SLEEVE: Routed through a "doghouse" (a large weatherproof opening) with several other feeds. Used where drilling openings for individual sleeves would be impractical.

PVC SLEEVE, EMT SLEEVE: Routed up through the roof, (optionally through a disconnect) with flex to the equipment.

Equipment Racks: Max 20 disconnects per rack

DISTRIBUTIION/TRAPEZE RACK SUPPORT .../...

Trash Chute

Horizontal:

• Check if shown on power drawings as mech connection
  • If not, use 100ft length

Vertical (Riser):

• Takeoff: COMMON ASSEMBLIES/MISC ASSEMBLIES/TRASH CHUTE RISER CIRCUIT...
• Uncheck Link 'Enable Livecount'
• Takeoff in Typical
  • Length = average floor to floor height